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Surname 海野 (海野 , Уно , Унно ) , all over the world, is a very rare last name. The family name 海野 is habitual in Kyrgyzstan, where it is a very rare surname, Russia, and Ukraine, where it is an extremely rare surname. In absolute terms, this name is the most popular in China, Russia, and Kyrgyzstan. More prevalently, 海野 is the forename as well as the last name.